new subscriber; enjoy the rants, you tell it like it is, refreshing memory
on topics and inspiring to learn more again.
DO you know what happened to the 1.5V rechargeable battery? I thought they
worked fairly well. They were on the market about the same time the digital
cameras were really getting popular. But the 1.2 ni cad just worked like
Cr@p. Seemed the cameras really needed that extra .6 of voltage. The 1.5V
rechargeable seemed to disappear? ?

Bloody excellent video! Its great that you broke all 4 types of batteries
apart to show the different types of internal construction techniques? I
normally buy Duracell types, but now that you have exposed the shoddy
construction methods that Energiser use, I certainly won’t be buying
Energiser cells ever again! Keep up the great work! love your videos!! ?

Since the Manganese Dioxide and Zinc Oxide undergo chemical changes as the
batteries are used, could the difference in material properties
(crumbliness) be due to one battery being at full charge and one being
empty? I would expect to see the materials look different when new versus
when the battery is used up.

Interestingly, I have opened a Duracell Procell 9V battery and it actually
has a pile construction the same as the Varta/Coles in the video. I also
then opened a regular Duracell Plus 9V which has the 6 AAAA cells instead.?

You can’t just say that the energizer design isn’t reliable. We’re talking
about a multi million dollar company here. Im sure they went through the
correct design and testing procedures to produce this battery. Simple can
be the key to solving complicated problems

I belief the stacked construction has more capacity, because essentially
the complete volume of the 9V battery is used. Instead the battery with the
AAAA construction method, has less battery chemistry per volume. First
because of the void spaces between cylindrical cells and also because a
cylindrical AAAA cell nearly has more than 1mm of its diameter only used
for the metal casing.